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Cricks Ch 4 Tissue

Cricks Ch 4 Tissue Flashcards

QuestionAnswer
Name the 4 classes of tissue found in the human body? epithelial, connective, muscular, nervous
Where are epithelial tissues found? Covering and lining the internal organs, also makes up the glands found in internal organs.
What is the apical surface of epithelial tissue? The outermost layer of cells- they are exposed to the lumen of the cells
What is the basement membrane of epithelial tissue? The deepest layer of cells, these attach to the connective tissue that supports the structure.
How do epithelial tissues get their blood supply? Blood moves to epithelial tissues by DIFFUSION, they have no direct blood supply.
Do epithelial tissues have nerve supply? Yes, even though arteries and veins dont reach these cells, nerves do.
How are epithelial tissues different from most body cells? They reproduce rapidly (you get an brand new gut lining every 72 hours.)
What are the 4 functions of epithelial tissues? protection, secretion, absorption, excretion
What are the 3 types of epithelial tissues- based on their shape? cuboidal, squamous, columunar
What do microvilli do? Absorb substances into the cell
What do cilia do? Move in wavelike fashion to move mucus or fluids?
Why are squamous cells flat and thin? So that fluids can move through them
What are stratified epithelial cells used for? They cover areas of wear and tear.
What happens when apical cells are worn off of stratified epithelium? Cells from deeper in the tissue migrate to the top- replacing the lost tissue
Why does Mr. Crick spend hours making flashcards and tutorials? To make it easier for YOU to be successful.
The term squamous means ___ flat
What type of epithelial cells are flat, and arranged like floor tile, 1 cell thick? Squamous
What form of epitlehial cell is as tall as it is wide, forming a cube chape? Cuboidal
Water, blood and nutrients can diffuse across a squamous cell because the cell is ______ thin
What fingerlike appendage moves mucous across the surface of the cell cilia
What fingerlike appendage increases the surface area of the cell for the purposes of absorbing and secreting substances? microvilli
What lab tests looks for pre-cancerous cells in the female cervix? Pap smear
What is the function of glandular epithelial cells? secrete substances
Where do exocrine glands send their secretions? outside of the body via ducts
Where do endocrine glands send their secretions? into the bloodstream or into the interstitial fluid
What is interstitial fluid? Fluid that bathes and surrounds each cellq
What do goblet cells do? they are the cells that secrete substances in glandular epithelium
Created by: russcrick
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